Ooops, i forgat to mention that my "Varieties of Peninsular Spanish"
professor said that some religious group somewhere (Nicaragua, maybe?) doesn't
like the song because they think that "Aserejč..." is some kind of Satanic chant
or something like that.

There's this song out now by "Las Ketchup" called "Aserejé". They
have different versions of it in different languages, but in all of them the
chorus is:

»» Aserejč ja de jč

»» de jebe tu de jebere seibiunouva

»» majavi an de bugui an de buididipi

Which is definitely not Spanish.

Some websites i've seen have referred to it as a language of their own,
while others have said that it's just gibberish. Some pages said that
it's gibberish based on part of "Rapper's Delight" by the Sugarhill Gang which
goes something like this: